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Grip-Aware Analog mmWave Beam Codebook Adaptation for 5G Mobile Handsets [article]

Ahmad AlAmmouri, Jianhua Mo, Boon Loong Ng, Jianzhong Charlie Zhang, Jeffrey G. Andrews
2019 arXiv   pre-print
This paper studies the effect of the user hand grip on the design of beamforming codebooks for 5G millimeter-wave (mmWave) mobile handsets.  ...  Overall, we demonstrate that 5G mmWave handsets are different from pre-5G handsets: the user grip needs to be explicitly factored into the codebook design.  ...  However, the obtained gains from the Grip-Aware scheme may be unrealistic given the current mobile devices, since it is based on the assumption that the mobile device can accurately detect the user hand  ... 
arXiv:1908.00850v1 fatcat:bgfsx324hna2dc62o7xsgby2hy

Study and prototyping of practically large-scale mmWave antenna systems for 5G cellular devices

Wonbin Hong, Kwang-Hyun Baek, Youngju Lee, Yoongeon Kim, Seung-Tae Ko
2014 IEEE Communications Magazine  
BIOLOGICAL IMPLICATIONS OF MMWAVE 5G CELLULAR DEVICES Assessing the biological implications on the user may be one of the most important parameters for mmWave 5G cellular devices.  ...  However, the virtually unlimited number of hand grip poses preferred by cellular phone users remains an unpredictable variable.  ... 
doi:10.1109/mcom.2014.6894454 fatcat:xfkjn4utzbbnxizh6izvcybjwe

EFFICIENCY OF MILLIMETER WAVE MOBILE TERMINAL ANTENNAS WITH THE INFLUENCE OF USERS

Rizwan Khan, Azremi Abdullah Al-Hadi, Ping Jack Soh
2018 Electromagnetic Waves  
to 200 GHz) for the next generation 5G mobile communication purposes [1] .  ...  Antennas and devices operating at mmWave bands are intrinsically compact compared to their counterparts in the lower microwave spectrum.  ...  IMPACT OF USERS ON ANTENNA ELECTROMAGNETIC RADIATION CHARACTERISTIC Users may hold the mobile in varying methods, and the degree of the hand impact depends on the antenna (size, design, near-field distribution  ... 
doi:10.2528/pier18012409 fatcat:comrmbwar5a6xisridsimyjroy

Sectors, Beams and Environmental Impact on the Performance of Commercial 5G mmWave Cells: an Empirical Study [article]

Salman Mohebi, Foivos Michelinakis, Ahmed Elmokashfi, Ole Grøndalen, Kashif Mahmood, Andrea Zanella
2022 arXiv   pre-print
In this paper, we address this gap and present the results of an empirical study to determine the actual performance of a commercial 5G mmWave cell through on-field measurements.  ...  This measurement analysis provides valuable information for researchers and 5G verticals to fully understand how a 5G mmWave commercial access network operates in real-world, under various operational  ...  grip impact [19] 2019 Rain Measurement (testbed) Rain attenuation [20] 2020 Rain Measurement (testbed) Rain attenuation [21] , [22] 2020 End-to-end urban Simulation Performance of TCP in mmWave  ... 
arXiv:2104.06188v3 fatcat:tdr53zoeubc37oss4za234zogu

Mobile Broadband Performance Evaluation: Analysis of National Reports

Yalew Zelalem Jembre, Woon-young Jung, Muhammad Attique, Rajib Paul, Beomjoon Kim
2022 Electronics  
Furthermore, a discussion on why the current methods are not sufficient to evaluate 5G services is presented.  ...  Currently, consumers mostly access the internet via mobile broadband, 2G, 3G, and 4G services.  ...  On the theme of phone behavior towards mmWave, another test where the phone was placed below two hands (death-grip) showed that there is performance degradation both in terms of BRSRP and SNR.  ... 
doi:10.3390/electronics11030485 doaj:d6053b8d59e14d26ad944ee0ac0dd5bb fatcat:4wndhjcmy5aarjljigyxv2mope

Statistical Investigation of the User Effects on Mobile Terminal Antennas for 5G Applications

Igor Syrytsin, Shuai Zhang, Gert Frolund Pedersen, Kun Zhao, Thomas Bolin, Zhinong Ying
2017 IEEE Transactions on Antennas and Propagation  
In this paper the user effects on mobile terminal antennas at 28 GHz are statistically investigated with the parameters of body loss, coverage efficiency and power in the shadow.  ...  The data are obtained from the measurements of 12 users in data and talk modes, with the antenna placed on the top and bottom of the chassis. In the measurements, the users hold the phone naturally.  ...  The impact of the user's hand/hands on the mobile antenna performance has been studied in [16] and [17] , where it has been concluded that the position and height of the antenna and position of the  ... 
doi:10.1109/tap.2017.2681701 fatcat:37s7yhggv5cwfe5ulr2n6gby6q

Machine Learning for 5G/B5G Mobile and Wireless Communications: Potential, Limitations, and Future Directions

Manuel Eugenio Morocho-Cayamcela, Haeyoung Lee, Wansu Lim
2019 IEEE Access  
This article is intended to stimulate discussion on the role that ML can play to overcome the limitations for a wide deployment of autonomous 5G/B5G mobile and wireless communications.  ...  This paper focuses on the potential solutions for 5G from an ML-perspective.  ...  To support these highly-mobile use cases, particularly in dense mmWave deployments where the users need to frequently hand-off between BSs, an optimal identification of the beamforming vectors is essential  ... 
doi:10.1109/access.2019.2942390 fatcat:aeokq5rbubezzeb7gglksqxawi

Internet of Things in Space: A Review of Opportunities and Challenges from Satellite-Aided Computing to Digitally-Enhanced Space Living [article]

Jonathan Kua, Chetan Arora, Seng W. Loke, Niroshinie Fernando, Chathurika Ranaweera
2021 arXiv   pre-print
The successful Mars landing of NASA's Perseverance rover on February 18, 2021 represents another giant leap for mankind in space exploration.  ...  They use small arms to grip and toss themselves from one rail to another.  ...  Since SAG is a stereo network with multipath propagation in mmWave signal, a good 3D channel modelling is required. Flying UAVs will have an impact on the propagation of wireless signals.  ... 
arXiv:2109.05971v1 fatcat:r23j6lfqyzayfphor5p7itnpni

Beam Codebook Design for 5G mmWave Terminals

Jianhua Mo, Boon Loong Ng, SangHyun Chang, Pengda Huang, Mandar Kulkarni, Ahmad Alammouri, Jianzhong Charlie Zhang, Jeongheum Lee, Won-Joon Choi
2019 IEEE Access  
A beam codebook of 5G millimeter wave (mmWave) for data communication consists of multiple high-peak-gain beams to compensate the high pathloss at the mmWave bands.  ...  of a practical mmWave antenna combined with the impact of terminal housing is highly irregular.  ...  We model the hand grip impact on the E-field response and propose an adaptive beam codebook generation method in [47] .  ... 
doi:10.1109/access.2019.2930224 fatcat:y4odjzrkijckvlv4qlzzoi7hfa

Internet of Things in Space: A Review of Opportunities and Challenges from Satellite-Aided Computing to Digitally-Enhanced Space Living

Jonathan Kua, Seng W. Loke, Chetan Arora, Niroshinie Fernando, Chathurika Ranaweera
2021 Sensors  
The successful Mars landing of NASA's Perseverance rover on 18 February 2021 represents another giant leap for humankind in space exploration.  ...  They use small arms to grip and toss themselves from one rail to another.  ...  As SAG is a stereo network with multi-path propagation in mmWave signal, a good 3D channel modelling is required. Flying UAVs will have an impact on the propagation of wireless signals.  ... 
doi:10.3390/s21238117 pmid:34884122 fatcat:hmyn35kvsracxmllimsepckaiq

Deep Learning Predictive Band Switching in Wireless Networks [article]

Faris B. Mismar, Ahmad AlAmmouri, Ahmed Alkhateeb, Jeffrey G. Andrews, Brian L. Evans
2020 arXiv   pre-print
We focus on switching between a lower (e.g., 3.5 GHz) band and a millimeter wave band (e.g., 28 GHz), and design and evaluate two classification models that are trained on a ray-tracing dataset.  ...  In cellular systems, the user equipment (UE) can request a change in the frequency band when its rate drops below a threshold on the current band.  ...  For example, it was shown in [21] that the antenna gains on the mmWave bands can suffer from up to 25 dB attenuation due to the user hand grip on the mobile device and it varies with the different hand  ... 
arXiv:1910.05305v4 fatcat:5qnf2xlupzfwxmlonxhowz5yya

Efficient 3-D Near-Field MIMO-SAR Imaging for Irregular Scanning Geometries

Josiah W. Smith, Murat Torlak
2022 IEEE Access  
First, we investigate the impact of array irregularities on image resolution.  ...  Additional details on system development and device calibration can be found in [20] .  ... 
doi:10.1109/access.2022.3145370 fatcat:gcz7qxw755go5hmdej5dcw3pp4

Urban Outdoor Measurement Study of Phased Antenna Array Impact on Millimeter-Wave Link Opportunities and Beam Misalignment [article]

Lars Kuger, Aleksandar Ichkov, Petri Mähönen, Ljiljana Simić
2020 arXiv   pre-print
We study the impact of phased antenna arrays in terms of number of link opportunities, achievable data rate and robustness under small-scale mobility, and compare this against reference horn antenna measurements  ...  We expect that 3D beamsteering and hand-grip aware beamcombining [39] will be required to maintain a high data rate under rotation of the user device and different user activities.  ...  However, these works lack fine-grained angle-of-arrival (AoA) and angle-of-departure (AoD) measurements, which are crucial for understanding the impact of beam misalignment on mmwave link and network performance  ... 
arXiv:1909.12024v2 fatcat:4rrevgshrfcwbkpxyoaybmlroi

A Full Dive into Realizing the Edge-enabled Metaverse: Visions, Enabling Technologies,and Challenges [article]

Minrui Xu, Wei Chong Ng, Wei Yang Bryan Lim, Jiawen Kang, Zehui Xiong, Dusit Niyato, Qiang Yang, Xuemin Sherman Shen, Chunyan Miao
2022 arXiv   pre-print
resource-constrained edge devices.  ...  Dubbed "the successor to the mobile Internet", the concept of the Metaverse has grown in popularity.  ...  Surveys on AR/VR service delivery [23] - [25] do focus on how AR/VR can be implemented over 5G mobile edge networks, as well as discuss the computing and offloading architectures involved.  ... 
arXiv:2203.05471v1 fatcat:ountkueaz5erxdjttpws6gfcbi

Orientation-assisted Beam Management for Beyond 5G Systems

Anum Ali, Jianhua Mo, Boon Loong Ng, Vutha Va, Jianzhong Charlie Zhang
2021 IEEE Access  
The proposed strategy, however, needs to be implemented and evaluated on a mobile device.  ...  Further, the beam steering ignores the hardware constraints of practical mmWave devices.  ... 
doi:10.1109/access.2021.3070275 fatcat:jrsqugbaqbfeng73ttoeokfjvi
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